ggmap is a new tool which enables such visualization by combining with GoogleMaps, Openstreet … etc.
Besides, ggmap can combine with the powerful visualization packege, ggplot2, which allow us to extent the applications of geographic visualization. ex: geom_path …
About map
About wrangling data
> library(ggmap)
qmap 為 get_map 和 ggmap 的快速指令
> qmap(location = "台北車站", zoom = 14, source = "google")
> qmap(location = "政治大學", zoom = 14, source = "osm")
> # it's the same
> map <- get_map(location = '台北車站',zoom = 14, source= 'google')
> ggmap(map, fullpage=T)